* {
    margin: 0;
    padding: 0;
}

html {
    font-size: 50px;
}

body {
    min-width: 320px;
    width: 15rem;
    margin: 0 auto;
    line-height: 1.5;
    font-family: Arial, Helvetica, sans-serif;
    background-color: #F2F2F2;
    /* background-color: purple; */
}

div {
    box-sizing: border-box;
}


/* ======flex 垂直居中 水平居中 center_VH 给父亲及、加======*/

.center_VH {
    /* 水平垂直 */
    display: flex;
    justify-content: center;
    align-items: center;
}

.center_V {
    /* 垂直居中 */
    display: flex;
    align-items: center;
}

.center_H {
    /* 水平居中 */
    display: flex;
    justify-content: center;
}

.iconfont {
    font-family: "iconfont" !important;
    font-size: 16px;
    font-style: normal;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}


/* 阿里字体 */

@font-face {
    font-family: 'iconfont';
    src: url('iconfont.ttf?t=1629984090731') format('truetype');
}


/* fonts/icomoon.eot?cvlwwh */


/* 引入字体图标 */

@font-face {
    font-family: 'icomoon';
    src: url('../icomoon/fonts/icomoon.eot?cvlwwh');
    src: url('../icomoon/fonts/icomoon.eot?cvlwwh#iefix') format('embedded-opentype'), url('../icomoon/fonts/icomoon.ttf?cvlwwh') format('truetype'), url('../icomoon/fonts/icomoon.woff?cvlwwh') format('woff'), url('../icomoon/fonts/icomoon.svg?cvlwwh#icomoon') format('svg');
    font-weight: normal;
    font-style: normal;
    font-display: block;
}

@media screen and (min-width: 320px) {
    html {
        font-size: 21.33333333px;
    }
}

@media screen and (min-width: 360px) {
    html {
        font-size: 24px;
    }
}

@media screen and (min-width: 375px) {
    html {
        font-size: 25px;
    }
}

@media screen and (min-width: 384px) {
    html {
        font-size: 25.6px;
    }
}

@media screen and (min-width: 400px) {
    html {
        font-size: 26.66666667px;
    }
}

@media screen and (min-width: 414px) {
    html {
        font-size: 27.6px;
    }
}

@media screen and (min-width: 424px) {
    html {
        font-size: 28.26666667px;
    }
}

@media screen and (min-width: 480px) {
    html {
        font-size: 32px;
    }
}

@media screen and (min-width: 540px) {
    html {
        font-size: 36px;
    }
}

@media screen and (min-width: 720px) {
    html {
        font-size: 48px;
    }
}

@media screen and (min-widyh: 750px) {
    html {
        font-size: 50px;
    }
}